MD11 RWY EXCURSION SHANNON; IRELAND.

Narrative

NORMAL APCH TO FLARE WITH HIGH BUT RELATIVELY STEADY XWINDS. FLARE AFFECTED BY GUST. ADDED PWR TO ARREST AIRSPD LOSS AND DSCNT. BOUNCED ON TOUCHDOWN. APPLIED MAX THRUST REVERSERS AND MAX MANUAL BRAKING. DECELERATION LESS THAN NORMAL. ACFT DEPARTED END OF RWY AT ESTIMATED 20 KTS. RWY SURFACE VERY SLIPPERY WITH STANDING WATER AND RUBBER DEPOSITS. UNEVEN BRAKE PERFORMANCE AND POSSIBLE SPOILER MALFUNCTION/FAILURE TO DEPLOY MAY HAVE CONTRIBUTED AS THE ROLLOUT DECELERATION WAS DEFINITELY NOT NORMAL; EVEN FOR THESE CONDITIONS. DATA SHOWS LNDG DISTANCE OF ABOUT '6000 FT.' THAT GAVE US A 3000+ FT MARGIN. FLT DATA RECORDER AND COCKPIT VOICE RECORDER BEING ANALYZED BY NTSB. ACCIDENT INVESTIGATION UNIT IS CONDUCTING INCIDENT INVESTIGATION. NEXT TIME I WILL REITERATE STANDARD PROCS CONCERNING SPOILER DEPLOYMENT IN MY BRIEFING. IN ADDITION; I WILL BE LESS EAGER TO BELIEVE TWR CALLS ON CURRENT CONDITIONS WHICH SPECIFICALLY EXCLUDED GUSTS. SUPPLEMENTAL INFO FROM ACN 449347: FROM ABOUT 30-40 MI OUT I BRIEF CAPT THAT I FELT HE MAKE APCH AND LNDG BECAUSE OF MY PROFICIENCY FROM R SEAT. IF SEATED FROM L SEAT PROBABLY YES; BUT FROM R SEAT NOT COMFORTABLE WITH STRONGER XWINDS. WENT THROUGH APCH BRIEF THEN VECTORS TO FINAL. OVER LNDG THRESHOLD EXPERIENCED SOME GUSTS/TURB. WIND CHK FROM TWR 150 DEGS 25 KTS. NO GUSTS RPTED FROM TWR ON OUR FINAL THROUGH TOUCHDOWN. LNDG AT ABOUT 3000 FT AND REMEMBER ACFT SLIGHT BALLOONING IN FLARE. THOUGHTS: DECISION TO GO AROUND AND LAND AT ALTERNATE ARPT (DUBLIN) AND WAIT OUT STRONG XWINDS. SEEMS THAT RUBBER BUILD-UP AT END OF RWY 24 EXCESSIVE AND LITTLE STOPPING ABILITY AVAILABLE.